Yeah, I had a set of E10's for a little while, and I liked them a lot. I stupidly sold them on ebay though to fund another purchase because I was using my Shure SE215's pretty exclusively at the time. I wish I would've held onto them now.

The PL50 is mid centric (which is my taste) with average bass quantity (a little less than the e10) and average treble. The only thing special about them is that the mids are forward and they are comfortable. They respond to eq (bass boost).